For me, I have no interest in WiFi for streaming images off to the internet. Most of my photography is done outdoors and very little of it is done in Wifi range of anything... probably a quarter of it is done outside cell phone range....
What I was interested in, was the ability to remote control the camera. That will be missed... and no WiFi SD card is going to give me those abilities.
I think that was the point right from the first post in this thread. I don't think anybody uses it to post to Facebook. But controlling the camera and reviewing on a large screen are big pluses to WiFi.
What really gets me is that all the technology is there to incorporate off-camera flash triggering and controlling; but there's no sign of it yet. Being able to walk around with an iPad and set all my lighting and camera controls, trigger, and review, would be fantastic.